+jb_err cgi_error_unknown(struct client_state *csp,
+ struct http_response *rsp,
+ jb_err error_to_report);
+
+extern jb_err get_number_param(struct client_state *csp,
+ const struct map *parameters,
+ char *name,
+ unsigned *pvalue);
+extern jb_err get_string_param(const struct map *parameters,
+ const char *param_name,
+ const char **pparam);
+extern char get_char_param(const struct map *parameters,
+ const char *param_name);